harborstremio/harbor — reverse-engineered prompt

Build me a polished desktop app called Harbor, a custom client for the Stremio ecosystem. I want it to feel like a real media hub, not just a web wrapper. It should let people sign in with their Stremio account, browse and discover movies and shows, work out of the box with Cinemeta, and get richer metadata if a TMDB key is added. Make sure it does not host or ship any media, it should just work with the user’s own Stremio addons and sources.

The big things I want are a native player, smart stream ranking so better sources show up first, support for anime and live TV, picture in picture, watch parties, DVR style features, addon browsing and management inside the app, and strong theme customization with an easy theme editor. I also want a modern home screen with hero content, continue watching, useful rails, deep metadata, and generally smooth desktop behavior.

Please make it feel production ready and cohesive. If anything is unclear, check the README and current docs online and fill in the gaps sensibly.